低溶解氧污泥微膨胀污染物去除性能的研究左金龙

3　8环境工程学报Vol.3,No.820098ChineseJournalofEnvironmentalEngineeringAug.2009左金龙1,3　王淑莹2＊　彭永臻1,2　彭赵旭1　姜安玺1　刘　洋4　孙治荣2(1.,150090;2.,100124;3.,150076;4.(),100124)　　,SBR,DO0.5～0.9mg/L,/(O/A),。:,SVI200mL/g,SS,COD80%,90%,90%,,46.7%。,,,。　　　　　　　X703　　　A　　　1673-9108(2009)08-1345-05StudyonpollutantremovalperformancewithlowDOandsludgemicro-bulkingZuoJinlong1,3　WangShuying2　PengYongzhen1,2　PengZhaoxu1　JiangAnxi1LiuYang4　SunZhirong2(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100124,China;3.DepartmentofEnvironmentalEngineering,HarbinUniversityofCommerce,Harbin150076,China;4.ChinaWaterHoldingPte.Ltd.(Singapore),Beijing100124,China)Abstract　InordertoinvestigatethepollutantremovaleffectwithlowDOandsludgemicro-bulking,thesequencebatchreactor(SBR)operatedinaeration/anoxic(O/A)processwithmeanDOvalue0.5～0.9mg/Lhasbeenstudied.TheresultsshowedthattheeffluentwaterqualitywasgoodwithlowSSvalue,theSVIcouldbecontrolledat200mL/g,andtheremovalratesofCOD,ammoniaandphosphoruscouldreach80%,90%and90%,respectively.Atthesametimetheaerationflowcouldbesavedto46.7%.ItisconcludedthattheactivatedsludgeprocesswithlowDOandsludgemicro-bulkingcouldattaingoodwastewatereffluentquality,ex-ertlittleinfluenceonsludgesedimentationperformance,inthemeanwhiletheenergycostwouldbesavedtoo.Keywords　lowDO;filamentousbacteria;sludgemicro-bulking;pollutants;removalefficiency;energysaving:(50778005);(863)(2006AA06Z319);(EDBS07/1-53974092);(LBH-Z08200):2008-08-22;:2009-03-19:(1970～),,,。E-mail:[e-mail]＊,E-mail:[e-mail]　　,,,[1～3]。(SVI)150mg/L,[4]。[5,6],(DO)0.5～0.9mg/L,,(SVI)150～250mL/g,。,,,,[7]。[8,9],。(SBR),3,,[10～12]。SBR,,,。1　1.1　,,。NaHCO3NaOHpH。:pH6.5～7.5;COD280～340mg/L;NH+4-N40～50mg/L;PO3-4-P5～7mg/L。1mL/L([13])。1.2　SBR,,,1。1　Fig.1　Schematicdiagramofexperimentalequipment700mm,200mm,12L,3L,0.25。10cm,。,。,。pH、DO、ORP(),。22～25℃。DO(1mg/L),,[14,15]。ORP(ORP,)[16～18]。/(O/A),3,8h,、2h、1h()、2h、3h。,10～15d,MLSS3000～3500mg/L。90d(),SVI150～250mL/g,。,,,。,1gNO-2-NNO-3-NN2,(BOD)1.71g1.86g[19],,NO-2-NNO-3-N,。、,(10%),,10～15min,COD。1.3　,COD、NH+4-N、NO2-N、NO3-N、PO3-4-PMLSS,COD5B-3COD;NO-3-N;NO-2-NN-(1-)-;NH+4-N;MLSS、SS;PO3-4-P;DO、pH、ORPWTWinoLabOxilevel2;OLYMPUSBX51。2　2.1　,DO2mg/L,0.3COD/(kgMLSS·d)。1,,DO0.5～0.9mg/L,0.05COD/(kgMLSS·d)。3,8h。10～15d,MLSS3000～3500mg/L。10d,SVI200mL/g,,。SVSVI2。13468:2　SVSVIFig.2　VariationofSVandSVIduringstart-upperiod2.2　SS2.2.1　反应器内生物相,。,,,,3。3:(a),(b),3(a),,,;3(b),、,,,。:,。,。,,[20],,。3　(×200)Fig.3　Filamentousactivatedsludgebeforeandaftermicro-bulking(×200)2.2.2　出水悬浮物,SBR。,。SS1～2mg/L,,,SBRSS。,,3,、,,。,,[21]。2.3　,,10～15d(1SRT),60d,。2.3.1　COD去除效果(DO2mg/L,)(DO)COD4。4CODFig.4　VariationofCODwithtimebeforeandafteractivatedsludgemicro-bulking4,,COD。,13473,COD。:,DO(),,,COD。,DO,COD,4。,COD,2h,COD50mg/L,COD80%～88%,。,DO,。2.3.2　氮类污染物的去除效果SBRDO(DO0.73mg/L),40～50mg/L,,90%,5。,DO(0.73mg/L)。5　Fig.5　Nitrogenpollutantremovaleffectwithmicro-bulkingunderlowDO(simultaneousnitrificationanddenitrification,SND)。SBR,SND[22]。SND,、[22]。,SNDSND。,DO,DO,、DO。Hanaki[23],,1,DO,,。,,、。,,,。,,,。2.3.3　磷去除效果,O/ASBRO,DO。,DO,、。6,O90%,OPO3-4-P1.0mg/L。(DO=2mg/L)。,,。6　Fig.6　Removaleffectofphosphatewithmicro-bulkingunderlowDO(A),NO-2-N,。SBR,。2.4　,DO,13488:,。,DO0.73mg/L,8L/h,DO=2mg/L15L/h,46.7%。DO,。,,50%～60%。,。3　　(1),,。,,。(2)(DO=0.73mg/L),,SS。,COD80%;90%,SND;90%,。(3)DO,DO0.73mg/L,46.7%。,。,。[1],,,..,2003,29(3):159～162[2],,,..,2006,26(5):54～56[3],..,2003,29(7):9～13[4]KruitJ.,HulsbeekJ.,VisserA.Bulkingsludgesolved?Wat.Sci.Tech.,2002,46(1～2):457～464[5].[].,2004.35～40[6],,,.SBR.,2004,20(8):40～42[7],,,.、.,2008,29(12):3342～3347[8],,,.A/O.,2008,29(12):3348～3352[9],,,.A2/O.,2008,24(23):33～35[10]RordriguesA.C.,BritoA.G.,MeloL.F.Posttreat-mentofabrewerywastewaterusingasequencingbatchre-actor.Wat.Environ.Res.,2001,73(1):45～51[11]PiersonJ.A.,PavlostathisS.G.Real-timemonitoringandcontrolofsequencingbatchreactorsforsecondarytreatmentofapoultryprocessingwastewater.Wat.Envi-ron.Res.,2000,72(5):585～592[12],,.SBR.,2004,24(4):576～580[13]SaitoT.,BrdjanovicD.,VanLoosdrechtM.C.M.Effectofnitriteonphosphateuptakebyphosphateaccu-mulatingorganisms.Wat.Res.,2004,38(17):3760～3768[14]LinH.,LuK.J.SludgesettlingandonlineNAD(P)Hfluorescenceprofilesinwastewatertreatmentbioreactorspreconcentratedatlowdissolvedoxygenconcentrations.Wat.Res.,2007,41(5):1877～1884[15]PolliceA.,TandoiV.,LestingiC.Influenceofaerationandsludgeretentiontimeonammoniumoxidationtonitriteandnitrate.Wat.Res.,2002,36(10):2541～2546[16]Marsili-LibelliS.ControlofSBRswitchingbyfuzzypat-ternrecognition.Wat.Res.,2006,40(6):1095～1107[17]YuanZ.,KellerJ.,LantP.OptimizationandControlofNitrogenRemovalActivatedSludgeProcesses:AReviewofRecentDevelopment.Netherlands:KluwerAcademicPublisher,2003[18],,,..,2008,24(10):16～20[19]IsaacsS.H.,HenzeM.Controlledcarbonsourceaddi-tiontoanalternatingnitrification-denitrificationwastewatertreatmentprocessincludingbiologicalPremoval.Wat.Res.,1995,29(1):77～89[20],,,..,2006,32(12):32～36[21],,..,2003,30(4):88～91[22]Hyung